- WSR 14-08-055HEALTH CARE AUTHORITY[Filed March 28, 2014, 2:05 p.m.]NOTICEDocument Title: Provider Notice #14-25.Subject: Prescription Drug Provider Guide update.State maximum allowable cost list (May 2014 update).For additional information, contact Amber Lougheed, HCA, P.O. Box 45504, phone (360) 725-1349, TDD/TTY 1-800-848-5429, fax (360) 586-9727, e-mail amber.lougheed@hca.wa.gov, web site http://www.hca.wa.gov/.